As most parallel and distributed programs are internally non-deterministic – consecutive runs with the same input might result in a different program flow – vanilla cyclic debugging techniques as such are useless. In order to use cyclic debugging tools, we need a tool that records information about an execution so that it can be replayed for debugging. Because recording information interferes w...

The paper deals with the modeling of processes charge-discharge battery assemblies taking into account their degradation. results simulating cyclic operation in Electronics Workbench electronic laboratory are presented, possible schemes inclusion given, and options for re-switching batteries during considered as well connecting additional elements to extend life connection. simulation took pres...

In multicomputers, an appropriate data distribution is crucial for reducing communication overhead and therefore the overall performance. For this reason, data parallel languages provide programmers with primitives, such as BLOCK and CYCLIC that can be used to distribute data across the distributed memory. However, the languages do not aid the programmer as to how the distribution should be per...

We present parallel and sequential dense QR factorization algorithms that are optimized to avoid communication. Some of these are novel, and some extend earlier work. Communication includes both messages between processors (in the parallel case), and data movement between slow and fast memory (in either the sequential or parallel cases). Our first algorithm, Tall Skinny QR (TSQR), factors m× n ...

In this paper we study the parallelization of CGLS, a basic iterative method for large and sparse least squares problems whose main idea is to organize the computation of conjugate gradient method to normal equations. A performance model called isoeeciency concept is used to analyze the behavior of this method implemented on massively parallel distributed memory computers with two dimensional m...

As databases increasingly integrate non-textual information it is becoming necessary to support eecient similarity searching in addition to range searching. Recently, declustering techniques have been proposed for improving the performance of similarity searches through parallel I/O. In this paper, we propose a new scheme which provides good declus-tering for similarity searching. In particular...

Abstract ScaLAPACK contains a pair of routines for solving systems which are narrow banded and diagonally dominant by rows. Mathematically, the algorithm is block cyclic reduction. The ScaLAPACK implementation can be improved using incomplete, rather than complete block cyclic reduction. If the matrix is strictly dominant by rows, then the truncation error can be bounded directly in terms of th...

abstract: this paper presents the results of pullout tests on uniaxial geogrid embedded in silica sand under monotonic and cyclic pullout forces. the new testing device as a recently developed automated pullout test device for soil-geogrid strength and deformation behavior investigation is capable of applying load/displacement controlled monotonic/cyclic forces at different rates/frequencies an...

Abstract We study conformal $$\eta$$ ? -Einstein solitons on the framework of trans-Sasakian manifold in dimension three. Existence is discussed. Then we find some results which are where Ricci tensor cyclic parallel and Codazzi type. also consider curvature conditions with addition to manifold. use torse-for...

Histamine, beta-adrenergic amines, and prostaglandins inhibited hemolytic plaque formation by splenic leukocytes from immunized mice. The same agents had previously been shown to prevent both the IgE-mediated release of histamine from human basophils and the immunologically specific cytolytic activity of murine lymphocytes, through stimulation of the production of cyclic AMP in leukocytes. We t...